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4 years ago

PLEASE HELP SHOW ALL WORK 30 POINTS

Mathematics

1 answer:

DanielleElmas [232]4 years ago

7 0

Answer:

A. A = 7x

B. S = x^2 +4x + 21

C. T = A + S

Step-by-step explanation:

A = l*w
A = 7x

S = A1 + A2 + A3
S = x^2 + 4x + 21

The values are related by the total area, T = L x W

L = (7+x), W = (4+x)

T = (7+x)(4+x)
T =x^2 + 11x + 21

Remember that total area we found? If we add the area of the big rectangle and the sum of the other (smaller) rectangles we get the total! Dont believe me?

A + S = 7x + x^2 + 4x + 21
A + S = T = x^2 + 11x + 21

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